Reverse a String In-Place

Code

#include <stdio.h>
#include <string.h>
void reverse_string(char *str) {
    // Your logic here
    int str_length = strlen(str) - 1;
    char *tail = str + str_length;
    char temp;

    for(int i=0; i <= str_length/2; i++){
        temp = *tail;
        *tail = *str;
        *str = temp;
        str++; tail--;
    }

}

int main() {
    char str[101];
    fgets(str, sizeof(str), stdin);

    // Remove newline
    int i = 0;
    while (str[i] != '\0') {
        if (str[i] == '\n') {
            str[i] = '\0';
            break;
        }
        i++;
    }

    reverse_string(str);
    printf("%s", str);
    return 0;
}

Solving Approach